Oreo
Depends what you call ‘affordable’ private renting can never take the place of social housing, unless you’re saying these are actual council flats? It may make a small difference in your local area but council homes are needed in vast quantities countrywide.
Our local housing association is commissioning a lot of new affordable homes for low wage workers who cannot afford to buy, my son in law and his wife both working, got one after only 3 months on the list, I think it’s about 2/3 market rent.
A mutual housing association gets big tax concessions so compared to private renters has big advantages. CGT never happens and any rent received funds other new properties.